Phosphor, its preparation method and light emitting devices using the same

ABSTRACT

A phosphor can be excited by UV, purple or blue light LED, its preparation method, and light emitting devices incorporating the same. The phosphor contains rare earth, silicon, alkaline-earth metal, halogen, and oxygen, as well as aluminum or gallium. Its General formula of is aLn 2 O 3 .MO.bM′ 2 O 3 .fSiO 2 .cAX e : dR, wherein Ln is at least one metal element selected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb and Sm; M is at least one metal element selected from a group consisting of Ca, Sr and Ba; M′ is at least one metal element selected from Al and Ga; A is at least one metal element selected from a group consisting of Li, Na, K, Mg, Ca, Sr and Ba; X is at least one element selected from F and Cl; R is at least one metal element selected from a group consisting of Ce, Eu, Tb and Mn; 0.01≦a≦2, 0.35≦b≦4, 0.01≦c≦1, 0.01≦d≦0.3, 0.01≦f≦3, 0.6≦e≦2.4. The phosphor has broad emitting range, high efficiency, better uniformity and stability. A light emitting device is obtained by incorporating the phosphor into a UV, purple or blue light emitting device.

FIELDS OF THE INVENTION

The present invention relates to a phosphor that can be excited byultraviolet, purple or blue LEDs, the preparation method thereof, andlight emitting devices using the same.

BACKGROUND OF THE INVENTION

Light emitting diodes (“LEDs”) have attracted much attention due to manyadvantages, such as small volume, low power consumption, long lifetime,fast-response, environmental friendliness, and high reliability etc.They are used widely in indicating lamps, decorating lamps, signal lampsetc. It can be looked forward to the coming future that LEDs will accessinto general lighting field with the faster and advanced developments.

Generally, there are two ways to generate white LED: one way is tocombine the red, green and blue LEDs to get white light; the other wayis to excite phosphors with LED to obtain white light. According to thedifference in phosphors, the latter approach includes three routes:matching yellow phosphor with blue LED, matching green and red phosphorswith blue LED, or matching red, green and blue phosphors with purple orUV LEDs.

As for current LED techniques, white LEDs are preferred to be generatedby incorporating blue LED with YAG (yttrium aluminum garnet) yellowphosphor. In the Chinese patent CN97196762, this phosphor is reported indetails. However, due to the characteristics of the phosphor, theluminous efficiency of white LEDs using this YAG phosphor is not yetadequate at present, and it is not applicable in general lighting fieldby taking into account the energy-saving. Therefore, the studies onnovel phosphors with good luminescence performance are focused by manyresearchers from all over the world.

A silicate-borate phosphor represented by the formula(Y,La)_(1-x-y-z)Ce_(x)Gd_(y)Tb_(z)(Mg,Zn,Gd)_(1-p)Mn_(p)B_(5-q-s)(Al,Ga)_(q)X_(s)O₁₀ has been reported in theGerman patent DE19730005. Phosphors comprising silicon, disclosed inBritish patents GB1334838, GB1326868 and GB1379949, with emission mainpeaks at 370-430 nm, are employed as cathode ray exciting phosphors. Analkaline-earth silicate phosphor that can be excited by blue light togenerate yellow light, with similar performance as that of the YAGphosphor, has been developed by Barry (J. Electrochem. Soc., 1968, 115:1181-1184), and has been described in white LED in U.S. PatentPublication US20040051111.

SUMMARY OF THE INVENTION

One aspect of the present invention is to provide a phosphor thatpossesses desirable chemical stability, high luminous efficiency and canbe excited efficiently by ultraviolet, purple or blue LED's.

Another aspect of the present invention is to provide a preparationmethod for the phosphor mentioned above.

Still another aspect of the present invention is to provide a lightemitting device that incorporates the above mentioned phosphor.

A phosphor according to one aspect of the invention contains, forexample, rare earth, silicon, alkaline-earth metal, halogen, and oxygen,as well as aluminum or gallium. Rare earth refers to “rare earthelements” or “rare earth metals,” and hereinafter, the expression “rareearth” will be used. The rare earth is at least one metal elementselected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb andSm, as well as at least one metal element selected from a groupconsisting of Ce, Eu and Tb. The alkaline-earth metal is at least onemetal element selected from a group consisting of Mg, Ca, Sr and Ba. Thehalogen is at least one element selected from F and Cl. The phosphoraccording to one aspect of the present invention possesses highconversion efficiency, and can be used to produce white LED with highluminous efficiency.

As one embodiment, the phosphor can be represented by the generalformula of

aLn₂O₃.MO.bM′₂O₃ .fSiO₂ .cAX_(e) :dR, wherein

Ln is at least one metal element selected from a group consisting of Sc,Y, La, Pr, Nd, Gd, Ho, Yb and Sm;

M is at least one metal element selected from a group consisting of Ca,Sr and Ba;

M′ is at least one metal element selected from Al and Ga;

A is at least one metal element selected from a group consisting of Li,Na, K, Mg, Ca, Sr and Ba;

X is at least one element selected from F and Cl;

R is at least one metal element selected from a group consisting of Ce,Eu, Tb and Mn;

0.01≦a≦2;

0.35≦b≦4;

0.01≦c≦1;

0.01≦d≦0.3;

0.01≦f≦, 3; and

0.6≦e≦2.4.

The phosphor according to the present invention has excellentluminescent properties such as wide exciting wavelength scope, efficientemitting transition and chemical stability, and can be excited byultraviolet, purple or blue LED. New light emitting devices can beobtained by incorporating the phosphor into the LED. A preparationmethod for the phosphor mentioned above includes the following:

(1) According to the general formula:

aLn₂O₃.MO.bM′₂O₃ .fSiO₂ .cAX_(e) :dR, wherein

Ln is at least one metal element selected from a group consisting of Sc,Y, La, Pr, Nd, Gd, Ho, Yb and Sm;

M is at least one metal element selected from a group consisting of Ca,Sr and Ba;

M′ is at least one metal element selected from Al and Ga;

A is at least one metal element selected from a group consisting of Li,Na, K, Mg, Ca, Sr and Ba;

X is at least one element selected from F and Cl;

R is at least one metal element selected from a group consisting of Ce,Eu, Tb and Mn;

0.01≦a≦2;

0.35≦b≦4;

0.01≦c≦1;

0.01≦d≦0.3;

0.01≦f≦3; and

0.6≦e≦2.4;

weighing elementary substance or compounds or salts of Ln, M, M′, halideof A, and compounds or salts of R and Si as raw materials based on thestoichiometric ratio;

adding at the same time, excess quantity of SiO₂ and/or AXe as flux intothe above raw materials, then mixing and grinding together to form amixture.

(2) baking the mixture at high temperature under reducing atmosphere toform a baked product.

(3) Carrying out a post-treatment to the baked product to obtain thephosphor of the present invention.

According to (1) above, the compounds of Ln, M, M′, A, R and Si areselected from oxide, hydroxide etc.; the salts are selected from thecorresponding carbonate, nitrate, organic salt etc.

According to (1) above, the amount of the flux is 0.001-20 wt % byweight of the total phosphor.

According to (1) above, the starting materials can be mixed and grindedin alcohol, acetone or water.

According to (2) above, the operation of baking can be carried out once,twice or more.

According to (2) above, the temperature of baking is at 500˜1600° C.

According to (2) above, each baking operation should last for 0.5˜15 h.

According to (3) above, the post-treatment includes grinding, air flowcrushing, washing, sifting, drying and grading, etc.

According to (3) above, the washing step in the post-treatment can bedone by using acid solution, alkali solution or water.

According to (3) above, the grading step in the post-treatment can becarried out with at least one method selected from a group consisting ofsedimentation method, sieving method, hydraulic classification and airflow grading.

It is easily found that the above preparation method of the presentphosphor is advantageous for being very simple, involving no pollutionand having low cost. Also, this phosphor can be excited by UV, purple orblue light to emit broadband visible light with wavelengths peaking at500-600 nm and having full width at half maximum (“FWHM”) beyond 30 nm.That is to say, the phosphor of the present invention can match UV,purple or blue LED, and can be implanted directly or along with otherphosphors into LEDs to produce white or color light emitting devices.

In accordance with an aspect of the present invention, a light emittingdevice can be produced by combining the present phosphor with at least akind of LED, such as UV, purple or blue LED. The phosphor contains rareearth, silicon, alkaline-earth metal, halogen, and oxygen, as well asaluminum or gallium. The rare earth is at least one metal elementselected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb and Smas well as at least one metal element selected from a group consistingof Ce, Eu and Tb The alkaline-earth metal is at least one metal elementselected from a group consisting of Mg, Ca, Sr and Ba. The halogen is atleast one element selected from F and Cl.

The phosphor can be represented by the general formula of

aLn₂O₃.MO.bM′₂O₃ .fSiO₂ .cAX_(e) :dR, wherein

Ln is at least one metal element selected from a group consisting of Sc,Y, La, Pr, Nd, Gd, Ho, Yb and Sm;

M is at least one metal element selected from a group consisting of Ca,Sr and Ba;

M′ is at least one metal element selected from Al and Ga;

A is at least one metal element selected from a group consisting of Li,Na, K, Mg, Ca, Sr and Ba;

X is at least one element selected from F and Cl;

R is at least one metal element selected from a group consisting of Ce,Eu, Tb and Mn;

0.01≦a≦2,

0.35≦b≦4,

0.01≦c≦1,

0.01≦d≦0.3,

0.01≦f≦3, and

0.6≦e≦2.4.

The above-described phosphor of the present invention has excellentluminescent properties and stability with novel composition.

The preparation method for the phosphor is simple, involving nopollution and having lower cost.

A light emitting device is obtained by incorporating the phosphor intoan LED, which has long lifetime and high luminous efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the excitation spectrum of Example 1;

FIG. 2 shows the emission spectrum of the Example 1.

DESCRIPTION OF THE EXAMPLES

In order to further illustrate the present invention and the advantagesthereof, the following specific examples are given, it being understoodthat the same are intended only as illustrative and in nowiselimitative. The scope of protection of this invention will be furtherembodied in the claims.

Example 1

In this example, the formula of the phosphor is verified as1.47Y₂O₃.BaO. 2.48Al₂O₃.1.03SiO₂.0.03BaF₂:0.03Ce,0.01Eu. Raw materialsY₂O₃(4N), BaO(4N), Al₂O₃ (4N), CeO₂ (4N), Eu₂O₃ (4N), SiO₂ (4N),BaF₂(AR), are weighed with appropriate stoichiometric ratio. SiO₂ andBaF₂ act as both reactant and flux. The amount of flux is 18 wt % byweight of above raw materials, and the weight ratio of the flux, SiO₂and BaF₂, is 1:1. Mixing and grinding these materials, and then bakingthem at 1450° C. for 3 hours under reducing atmosphere. After crushing,washing, sifting, drying and sieving, the phosphor can be obtained. Asshown in FIG. 1, the phosphor can be excited by 350-480 nm and emit 544nm yellow light.

Example 2

In this example, the formula of the phosphor is verified as1.47Y₂O₃.BaO. 2.47Al₂O₃.1.03SiO₂.0.06BaF₂:0.04Ce,0.03Eu. Raw materialsY₂O₃(4N), BaO(4N), Al₂O₃ (4N), CeO₂ (4N), Eu₂O₃ (4N), SiO₂ (4N),BaF₂(AR), are weighed with appropriate stoichiometric ratio. SiO₂ andBaF₂ act as both reactant and flux. The amount of flux is 1 Owt % byweight of above raw materials, wherein the weight ratio of SiO₂ and BaF₂is 1:1. The preparation method is similar as that of Example 1 but withdifferent roasting times, temperature and period and taking crushing andsifting during the intermission of two-stage baking, namely, first,baking at 1400° C. for 2 hours in reducing atmosphere, then crushing,sieving and baking at 1550° C. for 2 hours in reducing atmosphere. Aftercrushing, washing, sieving and drying, the phosphor can be obtained. Therelative emission intensity is shown in Table 1.

Examples 3-72

In these examples, the formulae of the phosphors are listed in Table 1.In EXAMPLES 3-72, raw materials: oxides of Ln, M and M′, halide of A(AXe), oxides of R, and oxides of Si (SiO₂), are weighed in accordancewith the stoichiometric ratio of the formula of each embodiment. Theoxides of Si and the halide of A may act as both reactant and flux. Theamount of flux is 10 wt % by weight of above raw materials, wherein theweight ratio of the flux, oxides of Si and halide of A, is 1:1. Thepreparation step is similar as that of EXAMPLE 2, namely, first, bakingat 1400° C. for 2 hours in reducing atmosphere, then crushing, sievingand baking at 1550° C. for 2 hours in reducing atmosphere. Aftercrushing, washing, sieving and drying, the phosphor can be obtained. Therelative emission intensity is showed in Table 1.

TABLE 1 The formulae and emission intensity of EXAMPLES 1-72 RelativeIntensity (%) Excited by Excited by EXAMPLES Formula 330 nm 460 nm 11.47Y₂O₃•BaO•2.48Al₂O₃•1.03SiO₂•0.03BaF₂:0.03Ce, 0.01Eu 100 100 21.47Y₂O₃•BaO•2.47Al₂O₃•1.03SiO₂•0.06BaF₂:0.04Ce, 0.03Eu 105 106 3Y₂O₃•0.48Sm₂O₃•BaO•2.45Al₂O₃•1.09SiO₂•0.06BaF₂:0.03Ce, 0.04Eu 96 97 4La₂O₃•0.22Gd₂O₃•0.25Sm₂O₃•BaO•2.44Al₂O₃•1.12SiO₂•0.06BaF₂:0.06Ce,0.01Eu, 0.001Tb 94 94 52.0Y₂O₃•BaO•1.0Al₂O₃•0.05Ga₂O₃•2.5SiO₂•0.36BaF₂:0.07Ce, 0.03Eu, 0.001Tb90 91 6 1.91Y₂O₃•BaO•2.0Al₂O₃•1.06SiO₂•0.1LiF:0.09Ce, 0.02Eu, 0.001Tb104 106 7 1.34Pr₂O₃•BaO•2.5Al₂O₃•1.09SiO₂•0.16LiCl:0.01Ce, 0.08Eu,0.002Tb 108 110 8 0.818Y₂O₃•BaO•3.0Al₂O₃•1.12SiO₂•0.2NaF:0.1Ce, 0.04Eu,0.003Tb 106 105 9 0.297Y₂O₃•BaO•3.5Al₂O₃•1.15SiO₂•0.2NaCl:0.12Ce,0.02Eu, 0.004Tb 103 104 100.01Y₂O₃•BaO•4.0Al₂O₃•0.01SiO₂•0.918KF:0.02Ce, 0.1Eu, 0.001Tb 112 115 111.473Nd₂O₃•BaO•2.79Al₂O₃•0.05SiO₂•0.37KCl:0.02Ce, 0.11Eu, 0.002Tb 91 9212 1.471Y₂O₃•BaO•2.81Al₂O₃•0.1SiO₂•0.28MgF₂:0.1Ce, 0.12Eu, 0.003Mn 90 8913 1.472Y₂O₃•BaO•2.61Al₂O₃•0.5SiO₂•0.28MgCl₂:0.13Ce, 0.01Eu, 0.001Mn 8284 14 1.482Y₂O₃•BaO•2.215Al₂O₃•1.0SiO₂•0.57CaF₂:0.01Ce, 0.12Eu, 0.004Mn94 95 15 1.133Ho₂O₃•BaO•2.2Al₂O₃•2.0SiO₂•0.3CaCl₂:0.1Ce, 0.02Eu, 0.001Tb97 96 16 0.8Y₂O₃•BaO•0.42Al₂O₃•3.0SiO₂•0.16SrF₂:0.01Ce, 0.1Eu, 0.003Tb89 92 17 1.47Y₂O₃•BaO•2.42Al₂O₃•SiO₂•0.16SrCl₂:0.1Ce, 0.04Eu 88 89 18Yb₂O₃•0.47Gd₂O₃•BaO•2.24Al₂O₃•1.36SiO₂•0.16LiF:0.13Ce, 0.01Eu 92 93 19Y₂O₃•0.44Gd₂O₃•BaO•2.25Al₂O₃•1.39SiO₂•0.16LiCl:0.08Ce, 0.09Eu 91 93 20Y₂O₃•0.44Gd₂O₃•BaO•2.21Al₂O₃•1.42SiO₂•0.16NaF:0.09Ce, 0.02Eu 94 95 21Y₂O₃•0.41Gd₂O₃•BaO•2.195Al₂O₃•1.45SiO₂•0.16NaCl:0.15Ce, 0.13Eu 88 89 22Y₂O₃•0.41Gd₂O₃•BaO•2.18Al₂O₃•1.48SiO₂•0.16KF:0.01Ce, 0.01Eu 91 92 23Y₂O₃•0.38Gd₂O₃•CaO•2.42Al₂O₃•1.48SiO₂•0.16KCl:0.03Ce, 0.03Eu 86 87 24Y₂O₃•0.38Gd₂O₃•CaO•2.165Al₂O₃•1.51SiO₂•0.16MgF₂:0.08Ce, 0.002Tb 94 95 25Y₂O₃•0.35Sc₂O₃•CaO•2.15Al₂O₃•1.54SiO₂•0.16MgCl₂:0.02Ce, 0.005Tb 89 91 26Y₂O₃•0.35Gd₂O₃•CaO•2.3Al₂O₃•1.12SiO₂•0.16CaF₂:0.04Ce, 0.001Tb 102 101 27Y₂O₃•0.32Gd₂O₃•CaO•2.135Al₂O₃•1.57SiO₂•0.16CaCl₂:0.07Ce, 0.08Eu 92 93 28Y₂O₃•0.32La₂O₃•CaO•2.12Al₂O₃•1.6SiO₂•0.16SrF₂:0.02Ce, 0.12Eu 89 90 29Y₂O₃•0.29Gd₂O₃•CaO•2.105Al₂O₃•1.63SiO₂•0.16SrCl₂:0.14Ce, 0.02Eu 87 88 30Y₂O₃•0.29Pr₂O₃•CaO•2.09Al₂O₃•1.66SiO₂•0.16BaCl₂:0.02Ce, 0.02Eu 93 94 31Y₂O₃•0.26Sm₂O₃•CaO•2.125Al₂O₃•1.74SiO₂•0.01LiF:0.06Ce, 0.06Eu 100 101 32Y₂O₃•0.26Sm₂O₃•CaO•2.11Al₂O₃•1.75SiO₂•0.03LiCl:0.09Ce, 0.08Eu 98 100 33Y₂O₃•0.23Sm₂O₃•CaO•2.095Al₂O₃•1.75SiO₂•0.06NaF:0.06Ce, 0.07Eu 102 103 34Y₂O₃•0.23Sm₂O₃•CaO•2.08Al₂O₃•1.74SiO₂•0.1NaCl:0.05Ce, 0.08Eu 96 97 35Y₂O₃•0.2Sm₂O₃•CaO•2.065Al₂O₃•1.67SiO₂•0.2KF:0.16Ce, 0.13Eu 97 98 36Y₂O₃•0.2Sm₂O₃•CaO•2.05Al₂O₃•1.6SiO₂•0.3KCl:0.15Ce, 0.13Eu 101 102 37Y₂O₃•0.47Sm₂O₃•CaO•2.23Al₂O₃•0.9SiO₂•0.4MgF₂:0.13Ce, 0.1Eu 96 97 38Y₂O₃•0.47Nd₂O₃•CaO•2.035Al₂O₃•1.43SiO₂•0.5MgCl₂:0.04Ce, 0.04Eu 96 95 39Y₂O₃•0.47Sm₂O₃•CaO•2.02Al₂O₃•1.36SiO₂•0.6CaF₂:0.02Ce, 0.03Eu 91 92 40Y₂O₃•0.47Sm₂O₃•CaO•2.005Al₂O₃•1.29SiO₂•0.7CaCl₂:0.12Ce, 0.03Eu 86 87 41Y₂O₃•0.47Sm₂O₃•CaO•1.99Al₂O₃•1.22SiO₂•0.8SrF₂:0.13Ce, 0.04Eu 88 89 42Y₂O₃•0.47Sm₂O₃•CaO•2.46Al₂O₃•0.18SiO₂•0.9SrCl₂:0.14Ce, 0.05Eu 85 86 43Y₂O₃•0.47Ho₂O₃•CaO•2.45Al₂O₃•0.1SiO₂•1.0BaCl₂:0.06Ce, 0.06Eu 96 97 441.47Y₂O₃•CaO•2.39Al₂O₃•0.05Ga₂O₃•1.08SiO₂•0.1LiF:0.08Ce, 0.05Eu 99 10045 0.01Y₂O₃•CaO•3.84Al₂O₃•0.05Ga₂O₃•1.00SiO₂•0.2LiCl:0.11Ce, 0.02Eu 103102 46 0.05Yb₂O₃•CaO•3.36Al₂O₃•0.05Ga₂O₃•1.3SiO₂•0.3NaF:0.1Ce, 0.05Eu108 107 47 0.1Y₂O₃•CaO•3.74Al₂O₃•0.05Ga₂O₃•0.82SiO₂•0.4NaCl:0.1Ce,0.03Eu 93 94 48 0.5Y₂O₃•CaO•3.33Al₂O₃•0.05Ga₂O₃•0.74SiO₂•0.5KF:0.09Ce,0.02Eu 90 91 49 1.0Y₂O₃•CaO•2.82Al₂O₃•0.05Ga₂O₃•0.66SiO₂0.6KCl:0.08Ce 8586 50 2.0Y₂O₃•CaO•1.81Al₂O₃•0.05Ga₂O₃•0.55SiO₂•0.7MgF₂:0.1Eu 96 97 510.01Sc₂O₃•SrO•3.79Al₂O₃•0.05Ga₂O₃•0.44SiO₂•0.8MgCl₂:0.007Ce, 0.01Eu 100100 52 0.05Y₂O₃•SrO•3.74Al₂O₃•0.05Ga₂O₃•0.36SiO₂•0.9CaF₂:0.06Ce, 0.04Eu93 92 53 0.1Y₂O₃•SrO•3.68Al₂O₃•0.05Ga₂O₃•0.28SiO₂•1.0CaCl₂:0.06Ce,0.03Eu 96 97 54 0.5Y₂O₃•SrO•3.27Al₂O₃•0.05Ga₂O₃•1.2SiO₂•0.1SrF₂:0.07Ce,0.04Eu 94 94 551.0La₂O₃•SrO•2.76Al₂O₃•0.05Ga₂O₃•1.12SiO₂•0.2SrCl₂:0.09Ce, 0.03Eu 90 9156 2.0Y₂O₃•SrO•1.75Al₂O₃•0.05Ga₂O₃•1.04SiO₂•0.3BaCl₂:0.1Ce, 0.1Eu 105106 57 0.47Pr₂O₃•0.5Gd₂O₃•0.5Sm₂O₃•SrO•2.3Al₂O₃•1.34SiO₂•0.06BaF₂:0.1Ce,0.11Eu 90 90 58 0.47Y₂O₃•Gd₂O₃•SrO•2.29Al₂O₃•1.36SiO₂•0.06BaF₂:0.07Ce,0.02Eu 89 88 59 0.47Y₂O₃•Gd₂O₃•SrO•2.23Al₂O₃•1.38SiO₂0.12LiF:0.12Ce,0.02Eu 87 86 60 0.47Nd₂O₃•Gd₂O₃•SrO•2.22Al₂O₃•1.4SiO₂•0.12LiCl:0.02Ce,0.11Eu 86 87 61 0.44Y₂O₃•Gd₂O₃•SrO•2.21Al₂O₃•1.42SiO₂•0.12NaF:0.02Ce,0.02Eu 87 85 62 0.44Y₂O₃•Gd₂O₃•SrO•2.2Al₂O₃•1.44SiO₂•0.12NaCl:0.08Ce,0.08Eu 85 84 63 0.41Y₂O₃•Gd₂O₃•SrO•2.19Al₂O₃•1.43SiO₂•0.12KF:0.07Ce,0.01Eu 83 84 64 0.41Y₂O₃•Gd₂O₃•SrO•2.42Al₂O₃•1.18SiO₂•0.12KCl:0.01Ce,0.03Eu 83 83 65 0.38Y₂O₃•Gd₂O₃•SrO•2.19Al₂O₃•1.46SiO₂•0.06MgF₂:0.08Ce,0.10Eu 89 91 66 0.38Y₂O₃•Gd₂O₃•SrO•2.18Al₂O₃•1.48SiO₂•0.06MgCl₂:0.1Ce,0.1Eu, 0.1Tb 88 87 670.35Y₂O₃•Gd₂O₃•SrO•1.46Al₂O₃•1.96SiO₂•0.06CaF₂:0.16Ce 105 104 680.35Pr₂O₃•Gd₂O₃•SrO•2.17Al₂O₃•1.5SiO₂•0.06CaCl₂:0.12Ce, 0.12Eu 81 84 690.32Y₂O₃•Gd₂O₃•SrO•2.12Al₂O₃•1.6SiO₂•0.06SrF₂:0.12Ce, 0.10Eu 82 83 700.32Y₂O₃•Gd₂O₃•SrO•2.07Al₂O₃•1.7SiO₂•0.06SrCl₂:0.08Ce, 0.12Eu 78 79 710.29Y₂O₃•Gd₂O₃•SrO•2.02Al₂O₃•1.8SiO₂•0.06BaF₂:0.06Ce, 0.10Eu 80 78 720.29Nd₂O₃•Gd₂O₃•SrO•1.97Al₂O₃•1.9SiO₂•0.06BaCl₂:0.08Ce, 0.10Eu 86 84

Example 73

White light emitting device can be obtained by incorporating thephosphor of EXAMPLE 1 into a blue light LED. The phosphor powder ofEXAMPLE 1 is firstly slurried, and then coated on a GaInN LED chip.After welding circuit and packaging, a white light emitting device isproduced.

INDUSTRIAL APPLICABILITY

The above-described phosphor has broad emitting range, high efficiency,better uniformity and stability. The production method is simple, nopollution and a lower cost. A light emitting device can be obtained byincorporating this phosphor into a UV, purple or blue light emittingdevice.

1-12. (canceled)
 13. A phosphor comprising rare earth, silicon,alkaline-earth metal, halogen, and oxygen, as well as aluminum orgallium, wherein the rare earth is at least one metal element selectedfrom a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb and Sm as wellas at least one metal element selected from a group consisting of Ce, Euand Tb; the alkaline-earth metal is at least one metal element selectedfrom a group consisting of Mg, Ca, Sr and Ba; and the halogen is atleast one element selected from F and Cl.
 14. The phosphor according toclaim 13, wherein the phosphor can be represented by a general formulaof:aLn₂O₃.MO.bM′₂O₃ .fSiO₂ .cAX_(e) :dR, wherein Ln is at least one metalelement selected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho,Yb and Sm; M is at least one metal element selected from a groupconsisting of Ca, Sr and Ba; M′ is at least one metal element selectedfrom Al and Ga; A is at least one metal element selected from a groupconsisting of Li, Na, K, Mg, Ca, Sr and Ba; X is at least one elementselected from F and Cl; R is at least one metal element selected from agroup consisting of Ce, Eu, Tb and Mn; 0.01≦a≦2; 0.35≦b≦4; 0.01≦c≦1,0.01≦d≦0.3; 0.01≦f≦3; and 0.6≦e≦2.4.
 15. The phosphor according to claim13, wherein the phosphor is a member selected from the group consistingof: 1.47Y₂O₃.BaO.2.48Al₂O₃.1.03SiO₂.0.03BaF₂:0.03Ce,0.01Eu1.47Y₂O₃.BaO.2.47Al₂O₃.1.03SiO₂.0.06BaF₂:0.04Ce,0.03EuY₂O₃.0.48Sm₂O₃.BaO.2.45Al₂O₃.1.09SiO₂.0.06BaF₂:0.03Ce,0.04EuLa₂O₃.0.22Gd₂O₃.0.25Sm₂O₃.BaO.2.44Al₂O₃.1.12SiO₂.0.06BaF₂:0.06Ce,0.01Eu,0.001Tb 2.0Y₂O₃.BaO.1.0Al₂O₃.0.05Ga₂O₃.2.5SiO₂.0.36BaF₂:0.07Ce,0.03Eu,0.001Tb1.91Y₂O₃.BaO.2.0Al₂O₃.1.06SiO₂.0.1LiF:0.09Ce,0.02Eu,0.001Tb1.34Pr₂O₃.BaO.2.5Al₂O₃.1.09SiO₂.0.16LiCl:0.01Ce,0.08Eu,0.002Tb0.818Y₂O₃.BaO.3.0Al₂O₃.1.12SiO₂.0.2NaF:0.1Ce,0.04Eu,0.003Tb0.297Y₂O₃.BaO.3.5Al₂O₃.1.15SiO₂.0.2NaCl:0.12Ce,0.02Eu,0.004Tb 0.01Y₂O₃.BaO.4.0Al₂O₃.0.01 SiO₂.0.918KF:0.02Ce,0.1Eu,0.001Tb1.473Nd₂O₃.BaO.2.79Al₂O₃.0.05SiO₂.0.37KCl:0.02Ce,0.11Eu,0.002Tb1.471Y₂O₃.BaO.2.81Al₂O₃.0.1 SiO₂.0.28MgF₂:0.1Ce,0.12Eu,0.003Mn1.472Y₂O₃.BaO.2.61 Al₂O₃.0.5SiO₂.0.28MgCl₂:0.13Ce,0.01Eu,0.001 Mn1.482Y₂O₃.BaO.2.215Al₂O₃.1.0SiO₂.0.57CaF₂:0.01Ce,0.12Eu,0.004Mn1.133Ho₂O₃.BaO.2.2Al₂O₃.2.0SiO₂.0.3CaCl₂:0.1Ce,0.02Eu,0.001Tb0.8Y₂O₃.BaO.0.42Al₂O₃.3.0SiO₂.0.16SrF₂:0.01Ce,0.1Eu,0.003Tb1.47Y₂O₃.BaO.2.42Al₂O₃′ SiO₂.0.16SrCl₂:0.1Ce,0.04EuYb₂O₃.0.47Gd₂O₃.BaO.2.24Al₂O₃.1.36SiO₂.0.16LiF:0.13Ce,0.01EuY₂O₃.0.44Gd₂O₃.BaO.2.25Al₂O₃.1.39SiO₂.0.16LiCl:0.08Ce,0.09EuY₂O₃.0.44Gd₂O₃.BaO.2.21Al₂O₃.1.42SiO₂.0.16NaF:0.09Ce,0.02Eu Y₂O₃.0.41Gd₂O₃.BaO.2.195Al₂O₃.1.45SiO₂.0.16NaCl:0.15Ce,0.13Eu Y₂O₃.0.41Gd₂O₃.BaO.2.18Al₂O₃.1.48SiO₂.0.16KF:0.01Ce,0.01EuY₂O₃.0.38Gd₂O₃.CaO.2.42Al₂O₃.1.48SiO₂.0.16KCl:0.03Ce,0.03EuY₂O₃.0.38Gd₂O₃.CaO.2.165Al₂O₃.1.51 SiO₂.0.16MgF₂:0.08Ce,0.002TbY₂O₃.0.35Sc₂O₃.CaO.2.15Al₂O₃.1.54SiO₂.0.16MgCl₂:0.02Ce,0.005TbY₂O₃.0.35Gd₂O₃.CaO.2.3Al₂O₃.1.12SiO₂.0.16CaF₂:0.04Ce,0.001TbY₂O₃.0.32Gd₂O₃.CaO.2.135Al₂O₃.1.57SiO₂.0.16CaCl₂: 0.07Ce,0.08EuY₂O₃.0.32La₂O₃.CaO.2.12Al₂O₃.1.6SiO₂.0.16SrF₂: 0.02Ce,0.12EuY₂O₃.0.29Gd₂O₃.CaO.2.105Al₂O₃.1.63SiO₂.0.16SrCl₂: 0.14Ce,0.02EuY₂O₃.0.29Pr₂O₃.CaO.2.09Al₂O₃.1.66SiO₂.0.16BaCl₂: 0.02Ce,0.02EuY₂O₃.0.26Sm₂O₃.CaO.2.125Al₂O₃.1.74SiO₂.0.01 LiF: 0.06Ce,0.06EuY₂O₃.0.26Sm₂O₃.CaO.2.11 Al₂O₃.1.75SiO₂.0.03LiCl: 0.09Ce,0.08EuY₂O₃.0.23Sm₂O₃.CaO.2.095Al₂O₃.1.75SiO₂.0.06NaF: 0.06Ce,0.07EuY₂O₃.0.23Sm₂O₃.CaO.2.08Al₂O₃.1.74SiO₂.0.1 NaCl: 0.05Ce,0.08EuY₂O₃.0.2Sm₂O₃.CaO.2.065Al₂O₃.1.67SiO₂.0.2KF: 0.16Ce,0.13EuY₂O₃.0.2Sm₂O₃.CaO.2.05Al₂O₃.1.6SiO₂.0.3KCl: 0.15Ce,0.13EuY₂O₃.0.47Sm₂O₃.CaO.2.23Al₂O₃.0.9SiO₂.0.4MgF₂: 0.13Ce,0.1EuY₂O₃.0.47Nd₂O₃.CaO.2.035Al₂O₃.1.43SiO₂.0.5MgCl₂: 0.04Ce,0.04EuY₂O₃.0.47Sm₂O₃.CaO.2.02Al₂O₃.1.36SiO₂.0.6CaF₂: 0.02Ce,0.03EuY₂O₃.0.47Sm₂O₃.CaO.2.005Al₂O₃.1.29SiO₂.0.7CaCl₂: 0.12Ce,0.03EuY₂O₃.0.47Sm₂O₃.CaO.1.99Al₂O₃.1.22SiO₂.0.8SrF₂: 0.13Ce,0.04EuY₂O₃.0.47Sm₂O₃.CaO.2.46Al₂O₃.0.18SiO₂.0.9SrCl₂: 0.14Ce,0.05EuY₂O₃.0.47Ho₂O₃.CaO.2.45Al₂O₃.0.1SiO₂.1.0BaCl₂: 0.06Ce,0.06Eu1.47Y₂O₃.CaO.2.39Al₂O₃.0.05Ga₂O₃.1.08SiO₂.0.1 LiF: 0.08Ce,0.05Eu0.01Y₂O₃.CaO.3.84Al₂O₃.0.05Ga₂O₃.1.00SiO₂.0.2LiCl: 0.11Ce,0.02Eu0.05Yb₂O₃.CaO.3.36Al₂O₃.0.05Ga₂O₃.1.3SiO₂.0.3NaF: 0.1Ce,0.05Eu0.1Y₂O₃.CaO.3.74Al₂O₃.0.05Ga₂O₃.0.82SiO₂.0.4NaCl: 0.1Ce,0.03Eu0.5Y₂O₃.CaO.3.33Al₂O₃.0.05Ga₂O₃.0.74SiO₂.0.5KF: 0.09Ce,0.02Eu1.0Y₂O₃.CaO.2.82Al₂O₃.0.05Ga₂O₃.0.66SiO₂.0.6KCl: 0.08Ce2.0Y₂O₃.CaO.1.81Al₂O₃.0.05Ga₂O₃.0.55SiO₂.0.7MgF₂: 0.1Eu0.01Sc₂O₃.SrO.3.79Al₂O₃.0.05Ga₂O₃.0.44SiO₂.0.8MgCl₂: 0.007Ce,0.01Eu0.05Y₂O₃.SrO.3.74Al₂O₃.0.05Ga₂O₃.0.36SiO₂.0.9CaF₂: 0.06Ce,0.04Eu0.1Y₂O₃.SrO.3.68Al₂O₃.0.05Ga₂O₃.0.28SiO₂.1.0CaCl₂: 0.06Ce,0.03Eu0.5Y₂O₃.SrO.3.27Al₂O₃.0.05Ga₂O₃₁₁.2SiO₂.0.1SrF₂: 0.07Ce,0.04Eu1.0La₂O₃.SrO.2.76Al₂O₃.0.05Ga₂O₃.1.12SiO₂.0.2SrCl₂: 0.09Ce,0.03Eu2.0Y₂O₃.SrO.1.75Al₂O₃.0.05Ga₂O₃.1.04SiO₂.0.3BaCl₂: 0.1Ce,0.1Eu0.47Pr₂O₃.0.5Gd₂O₃.0.5Sm₂O₃.SrO.2.3Al₂O₃.1.34SiO₂.0.06BaF₂: 0.1Ce,0.11Eu0.47Y₂O₃.Gd₂O₃.SrO.2.29Al₂O₃.1.36SiO₂.0.06BaF₂: 0.07Ce,0.02Eu0.47Y₂O₃.Gd₂O₃.SrO.2.23Al₂O₃.1.38SiO₂.0.12LiF: 0.12Ce,0.02Eu0.47Nd₂O₃.Gd₂O₃.SrO.2.22Al₂O₃.1.4SiO₂.0.12LiCl: 0.02Ce,0.11Eu0.44Y₂O₃.Gd₂O₃.SrO.2.21Al₂O₃.1.42SiO₂.012NaF: 0.02Ce,0.02Eu0.44Y₂O₃.Gd₂O₃.SrO.2.2Al₂O₃.1.44SiO₂.0.12NaCl: 0.08Ce,0.08Eu0.41Y₂O₃.Gd₂O₃.SrO.2.19Al₂O₃.1.43SiO₂.0.12KF: 0.07Ce,0.01Eu0.41Y₂O₃.Gd₂O₃.SrO.2.42Al₂O₃.1.18SiO₂.0.12KCl: 0.01Ce,0.03Eu0.38Y₂O₃.Gd₂O₃.SrO.2.19Al₂O₃.1.46SiO₂.0.06MgF₂: 0.08Ce,0.10Eu0.38Y₂O₃.Gd₂O₃.SrO.2.18Al₂O₃.1.48SiO₂.0.06MgCl₂: 0.1Ce,0.1Eu,0.1Tb0.35Y₂O₃.Gd₂O₃.SrO.1.46Al₂O₃.1.96SiO₂.0.06CaF₂: 0.16Ce0.35Pr₂O₃.Gd₂O₃.SrO.2.17Al₂O₃.1.5SiO₂.0.06CaCl₂: 0.12Ce,0.12Eu0.32Y₂O₃.Gd₂O₃.SrO.2.12Al₂O₃.1.6SiO₂.0.06SrF₂: 0.12Ce,0.10Eu0.32Y₂O₃.Gd₂O₃.SrO.2.07Al₂O₃.1.7SiO₂.0.06SrCl₂: 0.08Ce,0.12Eu0.29Y₂O₃Gd₂O₃.SrO.2.02Al₂O₃.1.8SiO₂.0.06BaF₂: 0.06Ce,0.10Eu and0.29Nd₂O₃.Gd₂O₃.SrO.1.97Al₂O₃.1.9SiO₂.0.06BaCl₂: 0.08Ce,0.10Eu
 16. Amethod of producing the phosphor according to claim 14, comprising:weighing elementary substance or compounds or salts of Ln, M, M′, halideof A, and compounds or salts of R and Si as raw materials with weightsthat are based on the stoichiometric ratio, and adding an excessquantity of SiO₂ and/or AX_(e) as flux into the raw materials, thenmixing and grinding to form a mixture; baking the mixture at hightemperature under reducing atmosphere; and carrying out a post-treatmentof the baked product to obtain the phosphor.
 17. The method according toclaim 16, wherein the compounds of Ln, M, M′, A, R and Si are selectedfrom the group consisting of corresponding oxide, hydroxide, carbonate,nitrate, and organic salt.
 18. The method according to claim 16, whereinthe amount of flux is in a range between 0.001% to 20% by weight of thetotal phosphor.
 19. The method according to claim 16, wherein baking iscarried out at least two times.
 20. The method according to claim 19,wherein the temperature of baking is at a range between 500° C. to 1600°C.
 21. The method according to claim 19 or 20, wherein each bakingoperation should last from 0.5 h to 15 h.
 22. The method according toclaim 16, wherein the post-treatment includes grinding, air flowcrushing, washing, sifting, drying and grading.
 23. The method accordingto claim 22, wherein the washing step in the post-treatment can becarried out using acid solution, alkali solution or water.
 24. Themethod according to claim 22, wherein the grading step in thepost-treatment is carried out with at least one method selected from agroup consisting of sedimentation method, sieving method, hydraulicclassification and air flow grading.
 25. The method according to claim16, wherein the phosphor is a member selected from the group consistingof: 1.47Y₂O₃.BaO.2.48Al₂O₃.1.03SiO₂.0.03BaF₂:0.03Ce,0.01Eu1.47Y₂O₃.BaO.2.47Al₂O₃.1.03SiO₂.0.06BaF₂:0.04Ce,0.03EuY₂O₃.0.48Sm₂O₃.BaO.2.45Al₂O₃.1.09SiO₂.0.06BaF₂:0.03Ce,0.04EuLa₂O₃.0.22Gd₂O₃.0.25Sm₂O₃.BaO.2.44Al₂O₃.1.12SiO₂.0.06BaF₂:0.06Ce,0.01Eu,0.001Tb 2.0Y₂O₃.BaO.1.0Al₂O₃.0.05Ga₂O₃.2.5SiO₂.0.36BaF₂:0.07Ce,0.03Eu,0.001Tb1.919Y₂O₃.BaO.2.0Al₂O₃.1.06SiO₂.0.1LiF:0.09Ce,0.02Eu,0.001Tb1.34Pr₂O₃.BaO.2.5Al₂O₃.1.09SiO₂.0.16LiCl:0.01Ce,0.08Eu,0.002Tb0.818Y₂O₃.BaO.3.0Al₂O₃.1.12SiO₂.0.2NaF:0.1Ce,0.04Eu,0.003Tb0.297Y₂O₃.BaO.3.5Al₂O₃.0.15SiO₂.0.2NaCl:0.12Ce,0.02Eu,0.004Tb0.01Y₂O₃.BaO.4.0Al₂O₃.0.01 SiO₂.0.918KF:0.02Ce,0.1Eu,0.001Tb1.473Nd₂O₃.BaO.2.79Al₂O₃.0.05SiO₂.0.37KCl:0.02Ce,0.11Eu,0.002Tb 1.471Y₂O₃.BaO.2.81 Al₂O₃.0.1 SiO₂.0.28MgF₂:0.1Ce,0.12Eu,0.003Mn1.472Y₂O₃.BaO.2.61 Al₂O₃.0.5SiO₂.0.28MgCl₂:0.13Ce,0.01Eu,0.001 Mn1.482Y₂O₃.BaO.2.215Al₂O₃.1.0SiO₂.0.57CaF₂:0.01Ce,0.12Eu,0.004Mn1.133Ho₂O₃.BaO.2.2Al₂O₃.2.0SiO₂.0.3CaCl₂:0.1Ce,0.02Eu,0.001Tb0.8Y₂O₃.BaO.0.42Al₂O₃.3.0SiO₂.0.16SrF₂:0.01Ce,0.1Eu,0.003Tb1.47Y₂O₃.BaO.2.42Al₂O₃. SiO₂.0.16SrCl₂:0.1Ce,0.04EuYb₂O₃.0.47Gd₂O₃.BaO.2.24Al₂O₃.1.36SiO₂.0.16LiF:0.13Ce,0.01EuY₂O₃.0.44Gd₂O₃.BaO.2.25Al₂O₃.1.39SiO₂.0.16LiCl:0.08Ce,0.09EuY₂O₃.0.44Gd₂O₃.BaO.2.21 Al₂O₃.1.42SiO₂.0.16NaF:0.09Ce,0.02Eu Y₂O₃.0.41Gd₂O₃.BaO.2.195Al₂O₃.1.45SiO₂.0.16NaCl:0.15Ce,0.13Eu Y₂O₃.0.41Gd₂O₃.BaO.2.18Al₂O₃.1.48SiO₂.0.16KF:0.01Ce,0.01EuY₂O₃.0.38Gd₂O₃.CaO.2.42Al₂O₃.1.48SiO₂.0.16KCl:0.03Ce,0.03EuY₂O₃.0.38Gd₂O₃.CaO.2.165Al₂O₃.1.51 SiO₂.0.16MgF₂:0.08Ce,0.002TbY₂O₃.0.35Sc₂O₃.CaO.2.15Al₂O₃.1.54SiO₂.0.16MgCl₂:0.02Ce,0.005TbY₂O₃.0.35Gd₂O₃.CaO.2.3Al₂O₃.1.12SiO₂.0.16CaF₂:0.04Ce,0.001TbY₂O₃.0.32Gd₂O₃.CaO.2.135Al₂O₃.1.57SiO₂.0.16CaCl₂: 0.07Ce,0.08EuY₂O₃.0.32La₂O₃.CaO.2.12Al₂O₃.1.6SiO₂.0.16SrF₂: 0.02Ce,0.12EuY₂O₃.0.29Gd₂O₃.CaO.2.105Al₂O₃.1.63SiO₂.0.16SrCl₂: 0.14Ce,0.02EuY₂O₃.0.29Pr₂O₃.CaO.2.09Al₂O₃.1.66SiO₂.0.16BaCl₂: 0.02Ce,0.02EuY₂O₃.0.26Sm₂O₃.CaO.2.125Al₂O₃.1.74SiO₂.0.01 LiF: 0.06Ce,0.06EuY₂O₃.0.26Sm₂O₃.CaO.2.11 Al₂O₃.1.75SiO₂.0.03LiCl: 0.09Ce,0.08EuY₂O₃.0.23Sm₂O₃.CaO.2.095Al₂O₃.1.75SiO₂.0.06NaF: 0.06Ce,0.07EuY₂O₃.0.23Sm₂O₃.CaO.2.08Al₂O₃.1.74SiO₂.0.1 NaCl: 0.05Ce,0.08EuY₂O₃.0.2Sm₂O₃.CaO.2.065Al₂O₃.1.67SiO₂.0.2KF: 0.16Ce,0.13EuY₂O₃.0.2Sm₂O₃.CaO.2.05Al₂O₃.1.6SiO₂.0.3KCl: 0.15Ce,0.13EuY₂O₃.0.47Sm₂O₃.CaO.2.23Al₂O₃.0.9SiO₂.0.4MgF₂: 0.13Ce,0.1EuY₂O₃.0.47Nd₂O₃.CaO.2.035Al₂O₃.1.43SiO₂.0.5MgCl₂: 0.04Ce,0.04EuY₂O₃.0.47Sm₂O₃.CaO.2.02Al₂O₃.1.36SiO₂.0.6CaF₂: 0.02Ce,0.03EuY₂O₃.0.47Sm₂O₃.CaO.2.005Al₂O₃.1.29SiO₂.0.7CaCl₂: 0.12Ce,0.03EuY₂O₃.0.47Sm₂O₃.CaO1.99Al₂O₃.1.22SiO₂.0.8SrF₂: 0.13Ce,0.04EuY₂O₃.0.47Sm₂O₃.CaO.2.46Al₂O₃.0.18SiO₂.0.9SrCl₂: 0.14Ce,0.05EuY₂O₃.0.47Ho₂O₃.CaO.2.45Al₂O₃.0.1 SiO₂.1.0BaCl₂: 0.06Ce,0.06Eu1.47Y₂O₃.CaO.2.39Al₂O₃.0.05Ga₂O₃.1.08SiO₂₀.1LiF: 0.08Ce,0.05Eu 0.01Y₂O₃.CaO.3.84Al₂O₃.0.05Ga₂O₃.1.00SiO₂.0.2LiCl: 0.11Ce,0.02Eu0.05Yb₂O₃.CaO.3.36Al₂O₃.0.05Ga₂O₃.1.3SiO₂.0.3NaF: 0.1Ce,0.05Eu0.1Y₂O₃CaO3.74Al₂O₃.0.05Ga₂O₃.0.82SiO₂.0.4NaCl: 0.1Ce,0.03Eu0.5Y₂O₃.CaO.3.33Al₂O₃.0.05Ga₂O₃.0.74SiO₂.0.5KF: 0.09Ce,0.02Eu1.0Y₂O₃.CaO.2.82Al₂O₃.0.05Ga₂O₃.0.66SiO₂.0.6KCl: 0.08Ce2.0Y₂O₃.CaO.1.81Al₂O₃.0.05Ga₂O₃.0.55SiO₂.0.7MgF₂: 0.1Eu0.01Sc₂O₃.SrO.3.79Al₂O₃.0.05Ga₂O₃.0.44SiO₂.0.8MgCl₂: 0.007Ce,0.01Eu0.05Y₂O₃.SrO.3.74Al₂O₃.0.05Ga₂O₃.0.36SiO₂.0.9CaF₂: 0.06Ce,0.04Eu0.1Y₂O₃.SrO.3.68Al₂O₃.0.05Ga₂O₃.0.28SiO₂.1.0CaCl₂: 0.06Ce,0.03Eu0.5Y₂O₃.SrO.3.27Al₂O₃.0.05Ga₂O₃.1.2SiO₂.0.1SrF₂: 0.07Ce,0.04Eu1.0La₂O₃.SrO.2.76Al₂O₃.0.05Ga₂O₃.0.12SiO₂.0.2SrCl₂: 0.09Ce,0.03Eu2.0Y₂O₃.SrO.1.75Al₂O₃.0.05Ga₂O₃.1.04SiO₂.0.3BaCl₂: 0.1Ce,0.1Eu0.47Pr₂O₃.0.5Gd₂O₃.0.5Sm₂O₃.SrO.2.3Al₂O₃.1.34SiO₂.0.06BaF₂: 0.1Ce,0.11Eu0.47Y₂O₃.Gd₂O₃.SrO.2.29Al₂O₃.1.36SiO₂.0.06BaF₂: 0.07Ce,0.02Eu0.47Y₂O₃.Gd₂O₃.SrO.2.23Al₂O₃.1.38SiO₂.0.12LiF: 0.12Ce,0.02Eu0.47Nd₂O₃.Gd₂O₃.SrO.2.22Al₂O₃.1.4SiO₂.0.12LiCl: 0.02Ce,0.11Eu0.44Y₂O₃.Gd₂O₃.SrO.2.21Al₂O₃.1.42SiO₂.0.12NaF: 0.02Ce,0.02Eu0.44Y₂O₃.Gd₂O₃.SrO.2.2Al₂O₃.1.44SiO₂.0.12NaCl: 0.08Ce,0.08Eu 0.41Y₂O₃.Gd₂O₃.SrO.2.19Al₂O₃.1.43SiO₂.0.12KF: 0.07Ce,0.01Eu 0.41Y₂O₃.Gd₂O₃.SrO.2.42Al₂O₃.1.18SiO₂.0.12KCl: 0.01Ce,0.03Eu0.38Y₂O₃.Gd₂O₃.SrO.2.19Al₂O₃.1.46SiO₂.0.06MgF₂: 0.08Ce,0.10Eu0.38Y₂O₃.Gd₂O₃.SrO.2.18Al₂O₃.1.48SiO₂.0.06MgCl₂:0.1Ce,0.1Eu,0.1Tb0.35Y₂O₃.Gd₂O₃.SrO.1.46Al₂O₃.1.96SiO₂.0.06CaF₂: 0.16Ce0.35Pr₂O₃.Gd₂O₃.SrO.2.17Al₂O₃.1.5SiO₂.0.06CaCl₂: 0.12Ce,0.12Eu0.32Y₂O₃.Gd₂O₃.SrO.2.12Al₂O₃.1.6SiO₂.0.06SrF₂: 0.12Ce,0.10Eu0.32Y₂O₃.Gd₂O₃.SrO.2.07Al₂O₃.1.7SiO₂.0.06SrCl₂: 0.08Ce,0.12Eu0.29Y₂O₃.Gd₂O₃.SrO.2.02Al₂O₃.1.8SiO₂.0.06BaF₂: 0.06Ce,0.10Eu and0.29Nd₂O₃.Gd₂O₃.SrO.1.97Al₂O₃.1.9SiO₂.0.06BaCl₂: 0.08Ce,0.10Eu
 26. Alight emitting device comprising: a phosphor; and a semiconductor lightemitting element capable of emitting a light in the range fromultraviolet light to visible light, wherein the phosphor contains rareearth, silicon, alkaline-earth metal, halogen, and oxygen, as well asaluminum or gallium; the rare earth is at least one metal elementselected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb and Smas well as at least one metal element selected from a group consistingof Ce, Eu and Tb; the alkaline-earth metal is at least one metal elementselected from a group consisting of Mg, Ca, Sr and Ba; and the halogenis at least one element selected from F and Cl.
 27. The light emittingdevice according to claim 26, wherein the phosphor is represented by thegeneral formula of:aLn₂O₃.MO.bM′₂O₃ .fSiO₂ .cAX_(e) :dR, wherein Ln is at least one metalelement selected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho,Yb and Sm; M is at least one metal element selected from a groupconsisting of Ca, Sr and Ba; M′ is at least one metal element selectedfrom Al and Ga; A is at least one metal element selected from a groupconsisting of Li, Na, K, Mg, Ca, Sr and Ba; X is at least one elementselected from F and Cl; R is at least one metal element selected from agroup consisting of Ce, Eu, Tb and Mn; 0.01≦a≦2; 0.35≦b≦4; 0.01≦c≦1;0.01≦d≦0.3; 0.01≦f≦3; and 0.6≦e≦2.4.
 28. The device according to claim27, wherein the phosphor is a member selected from the group consistingof: 1.47Y₂O₃.BaO.2.48Al₂O₃.1.03SiO₂.0.03BaF₂:0.03Ce,0.01Eu1.47Y₂O₃.BaO.2.47Al₂O₃.1.03SiO₂.0.06BaF₂:0.04Ce,0.03EuY₂O₃.0.48Sm₂O₃.BaO.2.45Al₂O₃.1.09SiO₂.0.06BaF₂:0.03Ce,0.04EuLa₂O₃.0.22Gd₂O₃.0.25Sm₂O₃.BaO.2.44Al₂O₃.1.12SiO₂.0.06BaF₂:0.06Ce,0.01Eu,0.001Tb 2.0Y₂O₃.BaO.1.0Al₂O₃.0.05Ga₂O₃.2.5SiO₂.0.36BaF₂:0.07Ce,0.03Eu,0.001Tb 1.91Y₂O₃.BaO.2.0Al₂O₃.1.06SiO₂.0.1LiF:0.09Ce,0.02Eu,0.001Tb1.34Pr₂O₃.BaO.2.5Al₂O₃.1.09SiO₂.0.16LiCl:0.01Ce,0.08Eu,0.002Tb0.818Y₂O₃.BaO.3.0Al₂O₃.1.12SiO₂.0.2NaF:0.1Ce,0.04Eu,0.003Tb0.297Y₂O₃.BaO.3.5Al₂O₃.1.15SiO₂.0.2NaCl:0.12Ce,0.02Eu,0.004Tb0.01Y₂O₃.BaO.4.0Al₂O₃.0.01 SiO₂.0.918KF:0.02Ce,0.1Eu,0.001Tb1.473Nd₂O₃.BaO.2.79Al₂O₃.0.05SiO₂.0.37KCl:0.02Ce,0.11Eu,0.002Tb 1.471Y₂O₃.BaO.2.81 Al₂O₃.0.1 SiO₂.0.28MgF₂:0.1Ce,0.12Eu,0.003Mn1.472Y₂O₃.BaO.2.61 Al₂O₃.0.5SiO₂.0.28MgCl₂:0.13Ce,0.01Eu,0.001 Mn1.482Y₂O₃.BaO.2.215Al₂O₃.1.0SiO₂.0.57CaF₂:0.01Ce,0.12Eu,0.004Mn1.133Ho₂O₃.BaO.2.2Al₂O₃.2.0SiO₂.0.3CaCl₂:0.1Ce,0.02Eu,0.001Tb0.8Y₂O₃.BaO.0.42Al₂O₃.3.0SiO₂.0.16SrF₂:0.01Ce,0.1Eu,0.003Tb1.47Y₂O₃.BaO.2.42Al₂O₃.SiO₂.0.16SrCl₂:0.1Ce,0.04EuYb₂O₃.0.47Gd₂O₃.BaO.2.24Al₂O₃.1.36SiO₂₁₀. 16LiF:0.13Ce,0.01EuY₂O₃.0.44Gd₂O₃.BaO.2.25Al₂O₃.1.39SiO₂.0.16LiCl:0.08Ce,0.09EuY₂O₃.0.44Gd₂O₃.BaO.2.21Al₂O₃.1.42SiO₂.0.16NaF:0.09Ce,0.02Eu Y₂O₃.0.41Gd₂O₃.BaO.2.195Al₂O₃.1.45SiO₂.0.16NaCl:0.15Ce,0.13Eu Y₂O₃.0.41Gd₂O₃.BaO.2.18Al₂O₃.1.48SiO₂.0.16KF:0.01Ce,0.01EuY₂O₃.0.38Gd₂O₃.CaO.2.42Al₂O_(3.1.48)SiO₂.0.16KCl:0.03Ce,0.03EuY₂O₃.0.38Gd₂O₃.CaO.2.165Al₂O₃.1.51 SiO₂.0.16MgF₂:0.08Ce,0.002TbY₂O₃.0.35Sc₂O₃.CaO.2.15Al₂O₃.1.54SiO₂.0.16MgCl₂:0.02Ce,0.005TbY₂O₃.0.35Gd₂O₃.CaO.2.3Al₂O₃.1.12SiO₂.0.16CaF₂:0.04Ce,0.001TbY₂O₃.0.32Gd₂O₃.CaO.2.135Al₂O₃.1.57SiO₂.0.16CaCl₂: 0.07Ce,0.08EuY₂O₃.0.32La₂O₃.CaO.2.12Al₂O₃.1.6SiO₂.0.16SrF₂: 0.02Ce,0.12EuY₂O₃.0.29Gd₂O₃.CaO.2.105Al₂O₃.1.63SiO₂.0.16SrCl₂: 0.14Ce,0.02EuY₂O₃.0.29Pr₂O₃.CaO.2.09Al₂O₃.1.66SiO₂.0.16BaCl₂: 0.02Ce,0.02EuY₂O₃.0.26Sm₂O₃.CaO.2.125Al₂O₃.1.74SiO₂.0.01 LiF: 0.06Ce,0.06EuY₂O₃.0.26Sm₂O₃.CaO.2.11 Al₂O₃.1.75SiO₂.0.03LiCl: 0.09Ce,0.08EuY₂O₃.0.23Sm₂O₃.CaO.2.095Al₂O₃.1.75SiO₂.0.06NaF: 0.06Ce,0.07EuY₂O₃.0.23Sm₂O₃.CaO.2.08Al₂O₃.1.74SiO₂.0.1 NaCl: 0.05Ce,0.08EuY₂O₃.0.2Sm₂O₃.CaO.2.065Al₂O₃.1.67SiO₂.0.2KF: 0.16Ce,0.13EuY₂O₃.0.2Sm₂O₃.CaO.2.05Al₂O₃.1.6SiO₂.0.3KCl: 0.15Ce,0.13EuY₂O₃-0.47Sm₂O₃.CaO.2.23Al₂O₃.0.9SiO₂.0.4MgF₂: 0.13Ce,0.1EuY₂O₃.0.47Nd₂O₃.CaO.2.035Al₂O₃.1.43SiO₂.0.5MgCl₂: 0.04Ce,0.04EuY₂O₃.0.47Sm₂O₃.CaO.2.02Al₂O₃.1.36SiO₂.0.6CaF₂: 0.02Ce,0.03EuY₂O₃.0.47Sm₂O₃.CaO.2.005Al₂O₃.1.29SiO₂.0.7CaCl₂: 0.12Ce,0.03EuY₂O₃.0.47Sm₂O₃.CaO.1.99Al₂O₃.1.22SiO₂.0.8SrF₂: 0.13Ce,0.04EuY₂O₃.0.47Sm₂O₃.CaO.2.46Al₂O₃.0.18SiO₂.0.9SrCl₂: 0.14Ce,0.05EuY₂O₃.0.47Ho₂O₃.CaO.2.45Al₂O₃.0.1 SiO₂.1.0BaCl₂: 0.06Ce,0.06Eu1.47Y₂O₃.CaO.2.39Al₂O₃.0.05Ga₂O₃ 1.08SiO₂.0.1LiF: 0.08Ce,0.05Eu0.01Y₂O₃.CaO.3.84Al₂O₃.0.05Ga₂O₃.1.00SiO₂.0.2LiCl: 0.11Ce,0.02Eu0.05Yb₂O₃.CaO.3.36Al₂O₃.0.05Ga₂O₃.1.3SiO₂.0.3NaF: 0.1Ce,0.05Eu0.1Y₂O₃.CaO.3.74Al₂O₃.0.05Ga₂O₃.0.82SiO₂.0.4NaCl: 0.11Ce,0.03Eu0.5Y₂O₃.CaO.3.33Al₂O₃.0.05Ga₂O₃.0.74SiO₂.0.5KF: 0.09Ce,0.02Eu1.0Y₂O₃.CaO.2.82Al₂O₃.0.05Ga₂O₃.0.66SiO₂.0.6KCl: 0.08Ce2.0Y₂O₃.CaO.1.81Al₂O₃.0.05Ga₂O₃.0.55SiO₂.0.7MgF₂: 0.1Eu 0.01Sc₂O₃SrO.3.79Al₂O₃.0.05Ga₂O₃.0.44SiO₂.0.8MgCl₂: 0.007Ce,0.01Eu0.05Y₂O₃.SrO.3.74Al₂O₃.0.05Ga₂O₃.0.36SiO₂.0.9CaF₂: 0.06Ce,0.04Eu0.1Y₂O₃SrO.3.68Al₂O₃.0.05Ga₂O₃.0.28SiO₂.1.0CaCl₂: 0.06Ce,0.03Eu0.5Y₂O₃.SrO.3.27Al₂O₃.0.05Ga₂O₃.1.2SiO₂.0.1SrF₂: 0.07Ce,0.04Eu1.0La₂O₃.SrO.2.76Al₂O₃.0.05Ga₂O₃.0.12SiO₂.0.2SrCl₂: 0.09Ce,0.03Eu2.0Y₂O₃.SrO.1.75Al₂O₃.0.05Ga₂O₃.1.04SiO₂.0.3BaCl₂: 0.1Ce,0.1Eu0.47Pr₂O₃.0.5Gd₂O₃.0.5Sm₂O₃.SrO.2.3Al₂O₃.1.34SiO₂.0.06BaF₂: 0.1Ce,0.11Eu0.47Y₂O₃.Gd₂O₃.SrO.2.29Al₂O₃.1.36SiO₂.0.06BaF₂: 0.07Ce,0.02Eu0.47Y₂O₃.Gd₂O₃.SrO.2.23Al₂O₃.1.38SiO₂.0.12LiF: 0.12Ce,0.02Eu0.47Nd₂O₃.Gd₂O₃.SrO.2.22Al₂O₃.1.4SiO₂.0.12LiCl: 0.02Ce,0.11Eu0.44Y₂O₃.Gd₂O₃.SrO.2.21Al₂O₃.1.42SiO₂.0.12NaF: 0.02Ce,0.02Eu0.44Y₂O₃.Gd₂O₃.SrO.2.2Al₂O₃.1.44SiO₂.0.12NaCl: 0.08Ce,0.08Eu 0.41Y₂O₃.Gd₂O₃.SrO.2.19Al₂O₃.1.43SiO₂.0.12KF: 0.07Ce,0.01Eu 0.41Y₂O₃.Gd₂O₃.SrO.2.42Al₂O₃.1.18SiO₂.0.12KCl: 0.01Ce,0.03Eu0.38Y₂O₃.Gd₂O₃.SrO.2.19Al₂O₃.1.46SiO₂.0.06MgF₂: 0.08Ce,0.10Eu0.38Y₂O₃.Gd₂O₃.SrO.2.18Al₂O₃.1.48SiO₂.0.06MgCl₂:0.1Ce,0.1Eu,0.1Tb0.35Y₂O₃.Gd₂O₃.SrO.1.46Al₂O₃.1.96SiO₂.0.06CaF₂: 0.16Ce0.35Pr₂O₃.Gd₂O₃.SrO.2.17Al₂O₃.1.5SiO₂.0.06CaCl₂: 0.12Ce,0.12Eu0.32Y₂O₃.Gd₂O₃.SrO.2.12Al₂O₃.1.6SiO₂.0.06SrF₂: 0.12Ce,0.10Eu0.32Y₂O₃.Gd₂O₃.SrO.2.07Al₂O₃.1.7SiO₂.0.06SrCl₂: 0.08Ce,0.12Eu0.29Y₂O₃.Gd₂O₃.SrO.2.02Al₂O₃.1.8SiO₂.0.06BaF₂: 0.06Ce,0.10Eu and0.29Nd₂O₃.Gd₂O₃.SrO.1.97Al₂O₃.1.9SiO₂.0.06BaCl₂: 0.08Ce,0.10 Eu